JP2000163020A - Display device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable even a large-screen display device to improve a defect in display and secure a sufficient contrast by applying a display data voltage corresponding to a column electrode position to a column electrode by a column electrode driver each time a row electrode driver applies a scanning voltage corresponding to a row electrode position to the row electrode in sequence. SOLUTION: According to voltages generated by a near row voltage generation part 6 and a distant row voltage generation part 7, row electrode drivers 4a and 4b apply scanning voltages to row electrodes 2a, 2b, 2c...2i in order. Each time the voltages are applied, column electrode drivers 5a and 5b apply display data voltages corresponding to display data to respective column electrodes 3a, 3b, 3c...3i at the same time according to voltages generated by a near column voltage generation part 8 and a distant column voltage generation part 9 to make a display. In this constitution, voltages enabling reaction corresponding to the display data are applied, so even the large-screen display device can make an accurate display and secure a sufficient contrast without reference to the positions.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for driving a display device using a ferroelectric liquid crystal.

[0002]

2. Description of the Related Art In recent years, various displays such as a TFT liquid crystal panel and a plasma display have been actively developed as computer monitors and wall-mounted televisions, and there have been remarkable progresses in supporting large screens and increasing resolution.

Under such circumstances, a display panel using a ferroelectric liquid crystal is expected to be applied to a large-screen display device by utilizing its high-speed response and memory effect.

FIG. 11 is a block diagram showing a configuration of a display device using a conventional ferroelectric liquid crystal. FIG.
As shown in FIG. 2, a ferroelectric liquid crystal panel 1 as a display panel includes row electrodes 2a, 2b, 2c.
a, 3b, 3c... 3l. Row electrode drivers 4a, 4b are provided corresponding to the row electrodes 2a, 2b, 2c,... 2i, and a plurality of output terminals thereof are respectively connected to the row electrodes 2a, 2b, 2c,. I have. Further, the column electrodes 3a, 3b, 3c,...
The column electrode drivers 5a and 5b are provided corresponding to the column electrodes 3l.
a, 3b, 3c... 3l.

[0005] The row electrode drivers 4a and 4b are supplied with the voltage generated by the row voltage generator 11, and the driver controller 1
0 and a scanning voltage based on this voltage is applied to the row electrode 2.
a, 2b, 2c... 2i.

On the other hand, the column electrode drivers 5a and 5b are supplied with the voltage generated by the column voltage generator 12, and controlled by the driver controller 10 to display data voltages based on the voltages and supply the column electrodes 3a, 3b, and 3b. 3c ... 3l.

Next, the operation of the display device using the ferroelectric liquid crystal configured as described above will be described.

[0008] Under the control of the driver controller 10, the row electrode driver 4 is controlled based on the voltage generated by the row voltage generator 11.
a, 4b, each time a scanning voltage is applied to each of the row electrodes 2a, 2b, 2c,.
5b, a voltage corresponding to the display data is simultaneously applied to each of the column electrodes 3a, 3b, 3c,.

FIG. 12 is a diagram showing a configuration of the row voltage generator 11. From the configuration shown, the voltage Vcc is changed to the resistance R1,
The voltage V1 required for the scanning voltage by dividing by R2 and R3
V2 is generated and supplied to the row electrode drivers 4a and 4b.

The configuration of the column voltage generator 12 is the same as that of the row voltage generator 11, and a description thereof will be omitted.

[0011]

However, in the above-mentioned conventional method, when a display device having a large screen (for example, A0 size) is formed using a ferroelectric liquid crystal panel, the resistance value of the electrodes forming the display panel is reduced. The phenomenon that the voltage applied by each electrode driver differs depending on the distance from each electrode driver due to the capacitance component of the liquid crystal material including the ferroelectric liquid crystal. This is because the display panel is composed of an electrode resistance R and a liquid crystal material capacitance component C as shown in FIG. 13 when shown in an electric equivalent circuit, so that the applied voltage waveform is different from the row electrode driver and the column electrode driver. It is because it is distorted. Therefore, even if the row electrode drivers 4a and 4b and the column electrode drivers 5a and 5b respectively apply the scanning voltage and the display data voltage as shown in FIG. Voltages at distant positions have their voltage waveforms distorted as shown in FIG.

In FIG. 11, positions close to the two electrode drivers of the liquid crystal panel (near and near), positions close to the row electrode driver and far from the column electrode driver (near and far),
If the position far from the row electrode driver and near the column electrode driver is (far, near) and the position far from both electrode drivers is far (far, far), the liquid crystal at each position will have:
A voltage as shown in FIG. 15 is applied. For this reason, in the liquid crystal near (near, near), the power (here, 2 × V, V = V) required for each electrode driver to react the liquid crystal.
The liquid crystal can be caused to react because the voltage V1-V2 is applied for the predetermined time t1-t2). However, in the case of the liquid crystal on the other side (far, far), even if each electrode driver applies the same power as described above, it is illustrated. The phenomenon that the liquid crystal does not react occurs due to the voltage waveform distortion. This means that even when the same display is performed for (near, near) and (far, far), this cannot be performed.

In order to avoid this, if a voltage value higher than the above-mentioned voltage value or a longer time is applied so that the liquid crystal positioned at (far, far) reacts, the liquid crystal positioned at (near, near) will be changed. For this purpose, excessive power is applied, which causes an unavoidable effect of crosstalk in driving a simple reaction matrix, resulting in a problem of lowering display contrast.

The present invention solves the above-mentioned conventional problems. Even when a large-screen display device is constituted by using a ferroelectric liquid crystal panel, a display which can improve the above-mentioned display defects and sufficiently secure display contrast can be obtained. It is intended to provide a device.

[0015]

In order to solve this problem, a display device using a ferroelectric liquid crystal according to the present invention comprises a liquid crystal material including a ferroelectric liquid crystal having a row electrode and a column electrode. A ferroelectric liquid crystal panel, a row electrode driver for applying a scanning voltage to a row electrode, a column electrode driver for applying a display data voltage to a column electrode, and a row electrode driver and a column electrode driver. A row voltage generation unit and a column electrode generation unit that generate a display data voltage corresponding to the scanning voltage and the column electrode; and a driver control unit that controls the row electrode driver and the column electrode driver. Each time a scanning voltage corresponding to a row electrode position is applied to an electrode, a column electrode driver applies a display data voltage corresponding to a column electrode position to a column electrode.

As described above, since each electrode driver applies the scanning voltage and the display data voltage according to the position of the electrode, accurate display and sufficient display can be performed even in a large-screen ferroelectric liquid crystal display device. A display device which can ensure contrast can be obtained.

[0017]

BEST MODE FOR CARRYING OUT THE INVENTION
A ferroelectric liquid crystal panel composed of a liquid crystal material including a ferroelectric liquid crystal having electrodes and column electrodes, a row electrode driver for applying a scanning voltage to the row electrodes, and a column electrode for applying a display data voltage to the column electrodes A driver, a row voltage generator and a column electrode generator for generating a scanning voltage corresponding to the row electrode and a display data voltage corresponding to the column electrode via the row electrode driver and the column electrode driver, and a row electrode driver and a column electrode driver And a driver control unit that controls the display data voltage corresponding to the column electrode position to the column electrode each time the row electrode driver sequentially applies a scanning voltage corresponding to the row electrode position to the row electrode. Even if the display device is a display device to which a ferroelectric liquid crystal having a large screen is applied, the voltage applied to the liquid crystal pixels differs depending on the position from the electrode driver. An effect that it is possible to perform an accurate liquid crystal display control which does not depend on.

The second aspect of the present invention is the first aspect of the present invention.
In the described invention, the row voltage generator and the column voltage generator are display devices that generate a scanning voltage corresponding to a row electrode position and a display data voltage corresponding to a column electrode position by a difference in resistance, and do not depend on the position. Since accurate liquid crystal display control can be performed and a scanning voltage and a display data voltage of each electrode driver are generated based on a difference in resistance, a display device can be configured with a simple configuration.

The third aspect of the present invention provides the first aspect.
In the invention described, the row voltage generation unit and the column voltage generation unit are display devices that generate a scan voltage corresponding to a row electrode position and a display data voltage corresponding to a column electrode position by resistance division of different voltages. In addition to performing accurate liquid crystal display control independent of the above, the resistance value to be divided is the same and the scanning voltage and display data voltage of each electrode driver are generated, so that the display device can be configured with a simple configuration. .

According to a fourth aspect of the present invention, in the first, second or third aspect of the present invention, the row voltage generating section and the column voltage generating section are applied to a liquid crystal material located closest to both electrode drivers. Is a display device that generates a scanning voltage according to the position of the row electrode and a display data voltage according to the position of the column electrode so as to be equal to the power (voltage × time). Even in the device, since the voltage applied to the liquid crystal pixel differs depending on the position from the electrode driver, there is an effect that accurate liquid crystal display control can be performed regardless of the position.

According to a fifth aspect of the present invention, in the first, second or third aspect of the present invention, the row voltage generating section and the column voltage generating section are applied to a liquid crystal material located closest to both electrode drivers. A display device that generates a scanning voltage corresponding to a row electrode position and a display data voltage corresponding to a column electrode position so as to be equivalent to a time exceeding a predetermined voltage, and a display device using a large-screen ferroelectric liquid crystal. However, since the voltage applied to the liquid crystal pixel differs depending on the position from the electrode driver, there is an effect that accurate liquid crystal display control can be performed regardless of the position.

According to a sixth aspect of the present invention, in the first, second, third, fourth, or fifth aspect, the row voltage generating section and the column voltage generating section each include a row electrode or a column having a small electric impedance. Only the voltage generation unit corresponding to the electrode is a display device that generates a scanning voltage corresponding to the row electrode position or a display data voltage corresponding to the column electrode position, and is a display device using a large-screen ferroelectric liquid crystal. However, since the voltage applied to the liquid crystal pixel varies depending on the position from the electrode driver, accurate liquid crystal display control can be performed regardless of the position, and only one of the scanning voltage and display according to the electrode position can be performed. Since the data voltage is generated, the display device can be configured with a simple configuration.

An embodiment of the present invention will be described below with reference to FIGS. (Embodiment 1) FIG. 1 is a block diagram showing a configuration of a display device using a ferroelectric liquid crystal according to an embodiment of the present invention.
FIG. 2 is a diagram showing an output voltage waveform of each electrode driver and a voltage waveform at a distance from the electrode driver, and FIG. 3 is a diagram showing a voltage waveform applied to the liquid crystal at each position on the display panel.

As shown in FIG. 1, a ferroelectric liquid crystal panel 1, which is a display panel, has row electrodes 2 arranged vertically.
a, 2b, 2c... 2i and the row electrodes 2a, 2b,
2c... 2i, column electrodes 3 arranged in the horizontal direction
a, 3b, 3c... 3l. Row electrode drivers 4a, 4b are provided corresponding to the row electrodes 2a, 2b, 2c,... 2i, and a plurality of output terminals thereof are respectively connected to the row electrodes 2a, 2b, 2c,. I have. Further, the column electrodes 3a, 3b, 3c,...
The column electrode drivers 5a and 5b are provided corresponding to the column electrodes 3l.
a, 3b, 3c... 3l.

The row electrode driver 4a is supplied with a voltage generated by the neighborhood row voltage generator 6, and is supplied to the row electrode driver 4b.
Is supplied with a voltage generated by the far row voltage generator 7 and is controlled by the driver controller 10 to apply a scanning voltage based on this voltage to the row electrodes 2a, 2b, 2c,... 2i. On the other hand, the column electrode driver 5a is supplied with the voltage generated by the neighborhood column voltage generator 8, and the column electrode driver 5a
b is supplied with a voltage generated by the far column voltage generator 9 and controlled by the driver controller 10 to display data voltages based on this voltage and output the column electrodes 3a, 3b, 3c.
1

The operation of the display device using the ferroelectric liquid crystal according to the present embodiment configured as described above will be described.

Under the control of the driver controller 10, the row electrodes 2a, 2b, 2c are supplied from the row electrode drivers 4a, 4b based on the voltages generated by the near row voltage generator 6 and the far row voltage generator 7. ... Each time a scanning voltage is sequentially applied to 2i, each of the column electrodes 3a, 3b,... Is generated based on the voltages generated by the near column voltage generator 8 and the far column voltage generator 9 by the column electrode drivers 5a, 5b. Display data voltages corresponding to the display data are simultaneously applied to 3c... 3l to perform display.

The output voltage waveform of each electrode driver is shown in FIG.
As shown in (A), the row electrode driver 4a and the column electrode driver 5a apply the voltages V1 and V2 to the one row electrode driver 4a.
b and the column electrode driver 5b output the voltages of V1−ΔV and V2 + ΔV at the illustrated timing. At this time, the voltage waveform at a position distant from each electrode driver is distorted as shown in (B) due to the resistance value of the electrodes constituting the display panel and the capacitance component of the liquid crystal material including the ferroelectric liquid crystal.

Here, as shown in FIG. 1, a position close to both electrode drivers (near and near), a position close to the row electrode driver and far from the column electrode driver (near and far), and a position close to the row electrode driver. A position that is far from the column electrode driver (far, near) and a position far from both electrode drivers (far, near)
If the distance is far, a voltage as shown in FIG. 3 is applied to the liquid crystal at each position.

For this reason, power (here, V = V1-V2, predetermined time t1-t2) required for each electrode driver to react the liquid crystal is applied to the liquid crystal in the vicinity (near, near). The liquid crystal can react. On the other hand (close,
The liquid crystal at (far), (far, near) has a voltage V + ΔV, (far, near).
Since the voltage (V + 2 × ΔV) is applied to the liquid crystal at the far position for a predetermined time (t1−t2), it can be caused to react similarly to the liquid crystal at the near position.

As described above, in the display device of the present embodiment, the distortion of the applied voltage waveform can be canceled by the applied voltage value. A sufficient contrast with the display can be ensured.

(Embodiment 2) FIG. 4 shows a near row voltage generator 6 for supplying a voltage to a row electrode driver 4a and a far row voltage for supplying a voltage to a row electrode driver 4b according to a second embodiment of the present invention. FIG. 3 is a diagram illustrating a configuration of a generation unit 7. In addition,
The configuration of the display device is the same as that of the first embodiment.

In FIG. 4, a power supply unit (not shown) of the apparatus is used.
In the neighborhood row voltage generator 6, based on the reference voltage Vcc supplied from the
And supply V1 and V2 to the row electrode driver 4a.

The far-side row voltage generator 7 divides this Vcc based on Vcc2 using resistors R4, R5 and R6 and supplies V1-ΔV and V2 + ΔV to the row electrode driver 4b.

Here, the configurations of the near column voltage generator 8 for supplying a voltage to the column electrode driver 5a and the far column voltage generator 7 for supplying a voltage to the column electrode driver 5b are the same as those in the case of the row electrodes. Therefore, the description is omitted.

With the above configuration, in the display device according to the present embodiment, the resistances in the near row voltage generator 6, the far row voltage generator 7, the near column voltage generator 8, and the far column voltage generator 9 are provided. As in the first embodiment, the distortion of the applied voltage waveform can be canceled by the difference between the applied voltage values with a simple configuration in which different applied voltage values are supplied to the corresponding row electrode driver and column electrode driver depending on the divided voltage. Therefore, even with a large-screen display device, accurate display regardless of the position and sufficient contrast can be ensured.

(Embodiment 3) FIG. 5 shows a near row voltage generator 6 for supplying a voltage to a row electrode driver 4a and a far row voltage for supplying a voltage to a row electrode driver 4b according to a third embodiment of the present invention. FIG. 3 is a diagram illustrating a configuration of a generation unit 7. In addition,
The configuration of the display device is the same as that of the first embodiment.

In FIG. 5, a power supply unit (not shown) of the apparatus
In the vicinity row voltage generator 6, based on the reference voltages Vcc and Vcc2 supplied from the power supply, the voltage Vcc is divided using the resistors R1, R2 and R3 to supply V1 and V2 to the row electrode driver 4a.

The far row voltage generator 7 uses the same resistors R1, R2 and R3 based on Vcc2 to generate this Vcc.
2 and V1−V, V2 + Δ are applied to the row electrode driver 4b.
V.

Here, the configurations of the near column voltage generator 8 for supplying a voltage to the column electrode driver 5a and the far column voltage generator 7 for supplying a voltage to the column electrode driver 5b are the same as those in the case of the row electrodes. Therefore, the description is omitted.

With the above configuration, in the display device according to the present embodiment, the near row voltage generator 6, the far row voltage generator 7, the near column voltage generator 8, and the far column voltage generator 9 are different. As in the first embodiment, the applied voltage waveform is distorted by a simple configuration in which a different applied voltage value is divided by the same resistance value with respect to the reference voltage and supplied to the corresponding row electrode driver and column electrode driver. Since the difference can be offset by the difference in value, accurate display independent of position and sufficient contrast can be ensured even in a large-screen display device.

(Embodiment 4) FIG. 6 shows an applied voltage waveform (broken line) applied to a liquid crystal positioned nearest to a two-electrode driver according to a fourth embodiment of the present invention. Such an applied voltage waveform (solid line)
FIG. Note that the configuration of the display device is the same as that of Embodiment 1.

In FIG. 6, the applied power P is calculated based on the applied voltage waveform applied to the liquid crystal positioned closest to the two-electrode driver.
n (voltage × time) becomes V × T.

On the other hand, the applied power Pf is Sa + Sc + Sd from the applied voltage waveform applied to the liquid crystal at an arbitrary position away from the two-electrode driver.

Here, since the distortion of the waveform differs depending on the position, by optimizing ΔV1 in FIG.
The distance row voltage generator 7 and the far column voltage generator 9 determine voltages to be supplied to the corresponding electrode drivers so as to approach n.

As described above, in the display device of the present embodiment, the distortion of the applied voltage waveform can be canceled by the difference of the applied voltage values as in the first embodiment. Independent display and sufficient contrast can be ensured.

(Embodiment 5) FIG. 7 (A) is an applied voltage waveform (broken line) applied to a liquid crystal located in the vicinity of both electrode drivers according to Embodiment 5 of the present invention, and FIG. FIG. 21 is a diagram showing an applied voltage waveform (solid line) applied to the liquid crystal at an arbitrary position distant from the two-electrode driver in the fifth embodiment. Note that the configuration of the display device is the same as that of Embodiment 1.

In FIG. 7A, a threshold voltage (Vth) is applied for a predetermined time (Ta) to the liquid crystal positioned closest to the two-electrode driver, and the liquid crystal reacts. The contrast is determined.

On the other hand, in the liquid crystal at an arbitrary position distant from the two-electrode driver, the waveform distortion differs depending on the position. Therefore, by optimizing ΔV1 in the figure, the threshold voltage (V
(th) The voltage to be supplied to each corresponding electrode driver is determined by the far row voltage generator 7 and the far column voltage generator 9 so that the voltage equal to or greater than the threshold voltage is applied for a predetermined time (Ta).

As described above, in the display device of the present embodiment, the distortion of the applied voltage waveform can be canceled by the difference of the applied voltage values as in the first embodiment. Independent display and sufficient contrast can be ensured.

(Embodiment 6) FIG. 8 is a block diagram showing a configuration of a display device using a ferroelectric liquid crystal according to an embodiment of the present invention, and FIG. FIG. 10 is a diagram showing the voltage waveform applied to the liquid crystal at each position on the display panel.

The structure of the display device using the ferroelectric liquid crystal according to the embodiment of the present invention is similar to that of the first embodiment shown in FIG.
, The near row voltage generator 6 and the far row voltage generator 7 that generate voltages to be supplied to the row electrode drivers 4a and 4b.
Only the part that is integrated into one as the row voltage generation unit 11 is different from the configuration of the display device using the conventional ferroelectric liquid crystal, and the detailed description of the configuration is omitted.

The operation of the display device using the ferroelectric liquid crystal in the present embodiment will be described.

Under the control of the driver controller 10, the row electrode driver 4 is controlled based on the voltage generated by the row voltage generator 11.
a, 4b, each time a scanning voltage is applied to each of the row electrodes 2a, 2b, 2c,.
5b, the column electrodes 3a, 3b, 3c based on the voltages generated by the near column voltage generator 8 and the far column voltage generator 9.
... A display data voltage corresponding to the display data is simultaneously applied to 31 and display is performed.

The output voltage waveform of each electrode driver is shown in FIG.
As shown in (A), the row electrode drivers 4a and 4b and the column electrode driver 5a output voltages of V1 and V2, while the column electrode driver 5b outputs voltages of V1−ΔV and V2 + ΔV. At this time, as shown in FIG. 10B, the voltage at a position distant from each electrode driver depends on the resistance value of the electrodes forming the display panel and the capacitance component of the liquid crystal material including the ferroelectric liquid crystal, as shown in FIG. Distorted.

Here, as shown in FIG. 1, a position close to the row electrode driver of the liquid crystal panel and a position close to both electrode drivers of the row electrode driver (near and near), a position close to the row electrode driver and far from the column electrode driver. (Near, far), far from the row electrode driver and near the column electrode driver (far, far)
Assuming that positions far from the two electrode drivers are (far, far), a voltage as shown in FIG. 10 is applied to the liquid crystal at each position.

For this reason, a power (here, V = V1−V2, a predetermined time t1−t2) required for each electrode driver to react the liquid crystal may be applied to the liquid crystal in the vicinity (near, near). As a result, the liquid crystal can react.

Further, a voltage V + .DELTA.V is applied to the liquid crystals at (far, near) and (far, far) for a predetermined time (t1-t2). Can react.

On the other hand, the liquid crystal at (near, far) has a voltage V
Is applied only for a predetermined time (t1-t2), but since the electric impedance on the column electrode side is small and the distortion of the applied voltage waveform is small as shown in the figure, this voltage V is slightly higher than the voltage at which the liquid crystal reacts. If a higher potential is set, or if the applied voltage time (t1-t2) is set to be slightly longer than the time during which the liquid crystal reacts, the liquid crystal can be reacted in the same manner as the liquid crystal near (near).

In the embodiment of the present invention, assuming that the row electrode and the column electrode are made of the same electrode material (for example, ITO) and have the same electrode width, as shown in FIG. Since it is longer than the column electrodes, the electric impedance on the side of the row electrode drivers 4a and 4b increases from each electrode driver. Therefore, the distortion of the applied voltage waveform far from each driver is greater in the row electrode drivers 4a and 4b than in the column electrode drivers 5a and 5b. Accordingly, it is shown that the difference in the applied voltage waveform distortion depending on the position on the row electrode driver side is offset by applying the output voltage corresponding to the position by the column electrode driver.

On the other hand, on the column electrode driver side, the applied voltage waveform is slightly distorted even at a distance from the column driver, but the distortion has a small effect on display. For this reason (close,
(Approx.), If the applied voltage or the applied voltage time is set so as to have a certain margin for the liquid crystal to react, it is possible to obtain an accurate display regardless of the position and a sufficient contrast even with a large-screen display device according to the above description. Can be secured. In addition, since the row voltage generation unit 11 can be shared by one without dividing the row voltage generation unit 11 into the one for the near area and the one for the far area, the configuration can be simplified.

[0062]

As described above, according to the present invention, a voltage is applied so that a reaction corresponding to the display data is performed irrespective of the position of the liquid crystal constituting the display panel. However, an effective effect that accurate display independent of the position and sufficient contrast can be secured can be obtained.

Further, according to the present invention, the near-row voltage generator and the far-row voltage generator, the near-column voltage generator, and the far-column voltage generator generate a predetermined voltage based on a voltage dividing ratio of resistance values. Therefore, an effective effect is obtained that it is possible to inexpensively configure a device capable of ensuring accurate display regardless of position and sufficient contrast even with a large-screen display device.

Further, according to the present invention, the resistance values of the near row voltage generator, the far row voltage generator, the near column voltage generator, and the far column voltage generator can all be made common. Even if there is a display device with a large screen, an effective effect is obtained that it is possible to inexpensively configure a device capable of ensuring accurate display regardless of position and sufficient contrast.

In each of the electrode drivers constituting the display panel, only the electrode driver having a large waveform distortion is applied with a voltage which causes a reaction corresponding to the scanning voltage and the display data in accordance with the electrode position. Even if there is a display device with a large screen, an effective effect is obtained that it is possible to inexpensively configure a device capable of ensuring accurate display regardless of position and sufficient contrast.

[Brief description of the drawings]

FIG. 1 is a block diagram illustrating a configuration of a display device according to Embodiment 1 of the present invention.

FIG. 2 is a diagram showing an output voltage waveform of each electrode driver and a voltage waveform at a distance from the electrode driver according to the first embodiment of the present invention.

FIG. 3 is a diagram showing voltage waveforms applied to a liquid crystal at each position of a display panel according to Embodiment 1 of the present invention.

FIG. 4 is a diagram showing a configuration of a near row voltage generator and a far row voltage generator according to a second embodiment of the present invention.

FIG. 5 is a diagram showing a configuration of a near row voltage generator and a far row voltage generator according to a third embodiment of the present invention.

FIG. 6 is a diagram showing an applied voltage waveform applied to a liquid crystal positioned closest to a two-electrode driver and an applied voltage waveform applied to a liquid crystal at an arbitrary position distant from the two-electrode driver according to the fourth embodiment of the present invention;

FIG. 7 (A) is a diagram showing an applied voltage waveform applied to a liquid crystal positioned closest to a two-electrode driver according to a fifth embodiment of the present invention. Diagram showing waveform

FIG. 8 is a block diagram showing a configuration of a display device according to a sixth embodiment of the present invention.

FIG. 9 is a diagram showing an output voltage waveform of each electrode driver and a voltage waveform at a distance from the electrode driver according to the sixth embodiment of the present invention.

FIG. 10 is a diagram showing a voltage waveform applied to a liquid crystal at each position of a display panel in Embodiment 6 of the present invention.

FIG. 11 is a block diagram showing a configuration of a conventional display device.

FIG. 12 is a diagram showing an output voltage waveform of each conventional electrode driver and a voltage waveform at a distance therefrom.

FIG. 13 is a diagram showing an electrical equivalent circuit of a display panel.

FIG. 14 is a diagram showing a voltage waveform applied to a liquid crystal at each position of a conventional display panel.

FIG. 15 is a diagram showing a voltage waveform applied to a liquid crystal at each position of a conventional display panel.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Liquid crystal panel 2a, 2b, 2c ... 2h Row electrode 3a, 3b, 3c ... 3l Column electrode 4a, 4b Row electrode driver 5a, 5b Column electrode driver 6 Near row voltage generation part 7 Far Row voltage generator for use 8 Column voltage generator for neighborhood 9 Column voltage generator for distance 10 Driver control unit 11 Row voltage generator 12 Column voltage generator

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 5C006 AC15 BA12 BB12 BB14 BC03 BC12 BF43 FA54 5C080 AA10 BB05 CC06 DD03 DD07 EE28 FF09 FF13 JJ02 JJ03

Claims (6)

[Claims] A ferroelectric liquid crystal panel comprising a liquid crystal material including a ferroelectric liquid crystal having a row electrode and a column electrode; a row electrode driver for applying a scanning voltage to the row electrode; A column electrode driver for applying a display data voltage; a row voltage generator and a column for generating a scan voltage corresponding to the row electrode and a display data voltage corresponding to the column electrode via the row electrode driver and the column electrode driver. An electrode generation unit, and a driver control unit that controls the row electrode driver and the column electrode driver. Each time the row electrode driver sequentially applies a scanning voltage according to a row electrode position to the row electrode, A display device, wherein a column electrode driver applies a display data voltage according to a column electrode position to the column electrode. 2. The apparatus according to claim 1, wherein said row voltage generator and said column voltage generator generate a scanning voltage corresponding to a row electrode position and a display data voltage corresponding to a column electrode position by a difference in resistance. The display device according to 1. 3. The method according to claim 1, wherein the row voltage generator and the column voltage generator generate a scanning voltage corresponding to a row electrode position and a display data voltage corresponding to a column electrode position by resistance division of different voltages. The display device according to claim 1. 4. The row voltage generator and the column voltage generator according to the position of the row electrode so as to be equal to the power (voltage × time) applied to the liquid crystal material located closest to both electrode drivers. 4. The display device according to claim 1, wherein a display data voltage corresponding to a scanning voltage and a column electrode position is generated. 5. A row voltage generator and a column voltage generator according to a row electrode position so as to be equal to a time exceeding a predetermined voltage applied to a liquid crystal material located nearest to both electrode drivers. 4. The display device according to claim 1, wherein a display data voltage corresponding to a scanning voltage and a column electrode position is generated. 6. The row voltage generator and the column voltage generator, wherein only a voltage generator corresponding to a row electrode or a column electrode having a small electric impedance is set to a scanning voltage or a column electrode position corresponding to a row electrode position. 6. The display device according to claim 1, wherein the display device generates a corresponding display data voltage.